A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5935-00-905-6652
NSN 6645-01-216-8682
NSN 5990-01-503-0194
NSN 5975-00-534-3697
NSN 6145-00-470-1606
NSN 6620-00-837-9484
NSN 6220-00-186-8565
NSN 5905-00-919-8623
NSN 5999-01-100-3221
NSN 5835-00-233-6327
NSN 5905-01-206-7163
NSN 5965-00-064-8209